EP 2677750 B1 20170201 - CODING METHOD, DECODING METHOD, AND EQUIPMENTS FOR TRANSFORM COEFFICIENTS
Title (en)
CODING METHOD, DECODING METHOD, AND EQUIPMENTS FOR TRANSFORM COEFFICIENTS
Title (de)
KODIERVERFAHREN, DEKODIERVERFAHREN UND GERÄTE FÜR TRANSFORMATIONSKOEFFIZIENTEN
Title (fr)
PROCÉDÉ DE CODAGE, PROCÉDÉ DE DÉCODAGE, ET ÉQUIPEMENTS POUR DES COEFFICIENTS DE TRANSFORMÉE
Publication
Application
Priority
- CN 201110057694 A 20110310
- CN 2011082597 W 20111122
Abstract (en)
[origin: EP2677750A1] A method and an apparatus for encoding and decoding transform coefficients are disclosed. The encoding method includes: encoding transform coefficients of a transform coefficient block according to a predetermined scan order, and encoding a set number of transform coefficients in each group until a last group of the transform coefficient block is encoded; storing an obtained map of non-zero transform coefficients, absolute values of transform coefficients, and positive and negative signs of non-zero transform coefficients; when the last group is being encoded, after obtaining a map of non-zero transform coefficients encoded in the last group, encoding the stored map of non-zero transform coefficients and the map of non-zero transform coefficients encoded in the last group into a bit stream; and after obtaining absolute values of transform coefficients and positive and negative signs of non-zero transform coefficients encoded in the last group, encoding the stored absolute values of transform coefficients and positive and negative signs of non-zero transform coefficients and the absolute values of transform coefficients and positive and negative signs of non-zero transform coefficients encoded in the last group into the bit stream. Encoding and decoding efficiency can be increased.
IPC 8 full level
H04N 19/117 (2014.01); H04N 19/129 (2014.01); H04N 19/132 (2014.01); H04N 19/60 (2014.01); H04N 19/61 (2014.01); H04N 19/645 (2014.01); H04N 19/86 (2014.01); H04N 19/91 (2014.01)
CPC (source: BR EP KR RU US)
H04N 19/117 (2014.11 - EP RU US); H04N 19/129 (2014.11 - EP KR US); H04N 19/132 (2014.11 - EP US); H04N 19/60 (2014.11 - BR KR US); H04N 19/61 (2014.11 - EP US); H04N 19/645 (2014.11 - EP RU US); H04N 19/86 (2014.11 - EP RU US); H04N 19/91 (2014.11 - EP RU US); H04N 19/117 (2014.11 - BR); H04N 19/129 (2014.11 - BR); H04N 19/132 (2014.11 - BR); H04N 19/61 (2014.11 - BR); H04N 19/645 (2014.11 - BR); H04N 19/86 (2014.11 - BR); H04N 19/91 (2014.11 - BR)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2677750 A1 20131225; EP 2677750 A4 20140827; EP 2677750 B1 20170201; AU 2011361374 A1 20131017; AU 2011361374 B2 20150507; AU 2015210374 A1 20150903; AU 2015210374 B2 20170601; BR 112013023141 A2 20161213; BR 112013023141 B1 20200505; BR 112013023141 B8 20200519; CA 2829494 A1 20120913; CA 2829494 C 20170627; CN 102685503 A 20120919; CN 102685503 B 20140625; DK 3211897 T3 20190624; EP 3211897 A1 20170830; EP 3211897 B1 20190403; ES 2623202 T3 20170710; ES 2732009 T3 20191120; HU E043337 T2 20190828; JP 2014511639 A 20140515; JP 5881747 B2 20160309; KR 101654123 B1 20160905; KR 101688452 B1 20161222; KR 20130128463 A 20131126; KR 20160105934 A 20160907; PL 3211897 T3 20190930; PT 3211897 T 20190611; RU 2013145307 A 20150420; RU 2565505 C2 20151020; RU 2618905 C1 20170511; SI 3211897 T1 20190628; TR 201907869 T4 20190621; US 10165305 B2 20181225; US 2014010312 A1 20140109; US 2017111659 A1 20170420; US 9571836 B2 20170214; WO 2012119463 A1 20120913
DOCDB simple family (application)
EP 11860213 A 20111122; AU 2011361374 A 20111122; AU 2015210374 A 20150805; BR 112013023141 A 20111122; CA 2829494 A 20111122; CN 2011082597 W 20111122; CN 201110057694 A 20110310; DK 16196991 T 20111122; EP 16196991 A 20111122; ES 11860213 T 20111122; ES 16196991 T 20111122; HU E16196991 A 20111122; JP 2013556948 A 20111122; KR 20137025250 A 20111122; KR 20167023745 A 20111122; PL 16196991 T 20111122; PT 16196991 T 20111122; RU 2013145307 A 20111122; RU 2015138392 A 20111122; SI 201131721 T 20111122; TR 201907869 T 20111122; US 201314021782 A 20130909; US 201615391810 A 20161227